- Centre National de la Recherche ScientifiqueFR640 papers
- The University of SydneyAU475 papers
- University of BirminghamGB381 papers
- University of CopenhagenDK357 papers
- Instituto de Astrofísica de CanariasES341 papers
- Universidad de La LagunaES308 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR304 papers
- California Institute of TechnologyUS282 papers
- Center for Astrophysics Harvard & SmithsonianUS281 papers
- European Southern ObservatoryCL265 papers
- Astrophysique, Instrumentation et ModélisationFR259 papers
- Osservatorio Astronomico di PadovaIT258 papers
8 papers · 2 filters
Redshift drift in an inhomogeneous universe: averaging and the backreaction conjecture
S. M. Koksbang, S. Hannestad
An expression for the average redshift drift in a statistically homogeneous and isotropic dust universe is given. The expression takes the same form as the expression for the redsh…
Efficient calculation of cosmological neutrino clustering with both linear and non-linear gravity
Maria Archidiacono, Steen Hannestad
We study in detail how neutrino perturbations can be followed in linear theory by using only terms up to in the Boltzmann hierarchy. We provide a new approximation to the thi…
The effect of interacting dark energy on local measurements of the Hubble constant
Io Odderskov, Marco Baldi, Luca Amendola
In the current state of cosmology, where cosmological parameters are being measured to percent accuracy, it is essential to understand all sources of error to high precision. In th…
Sterile neutrinos with pseudoscalar self-interactions and cosmology
Maria Archidiacono, Steen Hannestad, Rasmus Sloth Hansen +1
Sterile neutrinos in the electronvolt mass range are hinted at by a number of terrestrial neutrino experiments. However, such neutrinos are highly incompatible with data from the C…
The Young and Bright Type Ia Supernova ASASSN-14lp: Discovery, Early-Time Observations, First-Light Time, Distance to NGC 4666, and Progenitor Constraints
B. J. Shappee, A. L. Piro, T. W. -S. Holoien +29
On 2014 Dec. 9.61, the All-Sky Automated Survey for SuperNovae (ASAS-SN or "Assassin") discovered ASASSN-14lp just days after first light using a global array of 14-cm diam…
Studying the precision of ray tracing techniques with Szekeres models
S. M. Koksbang, S. Hannestad
The simplest standard ray tracing scheme employing the Born and Limber approximations and neglecting lens-lens coupling is used for computing the convergence along individual rays…